Welche Rolle spielt die Verwendung von bcrypt (Blowfish) bei der sicheren Speicherung von Passwörtern und wie kann dies in PHP implementiert werden?

bcrypt (Blowfish) is a cryptographic hashing function that is commonly used for securely storing passwords. It is important to use bcrypt because it incorporates a salt value and a cost factor, making it resistant to brute force attacks. In PHP, bcrypt can be implemented using the password_hash() function to securely hash passwords before storing them in a database.

// Generate a bcrypt hashed password
$password = "secret_password";
$hashed_password = password_hash($password, PASSWORD_BCRYPT);

// Verify a bcrypt hashed password
$entered_password = "secret_password";
if (password_verify($entered_password, $hashed_password)) {
    echo "Password is correct";
} else {
    echo "Password is incorrect";
}